Improvement in refrigerators



G. E. AGKLOM;

Refrigerator.

No. 199,891. Patented Feb. 5,1878;

I nven'lor a" W1 finesse;

N-PETERS, PHOTO-LITMOGRAPHER, WASHKNGTON. D O.

UNITED STATES PATENT 1 OFFICE.

GEORGE E. AGKLOM, OF GHELTENHAM, ENGLAND.

IMPROVEMENT IN REFRIGERATORS.

Specification forming part of Letters Patent No. 199,891, dated February 5, 1878; application filed June 28, 1877 patented in England September 15,1877.

To all whom it may concern.-

Be it known that I, GEORGE EVATT AoK- LOM, of Gheltenham, in the county of Gloucester, England, have invented a new and useful improved apparatus for use in preserving animal and vegetable matters during storage or transit, which improvement was patented in England, sealed September 15, 1877, No. 1,157, and is fully set forth in the following specification, reference being had to the accompanying placed the animal or vegetable matters to be preserved, and a the door or cover for entrance thereto.

The ice or other matter used as the refrigerating means is placed in the chamber 1), where, to facilitate the more equal distribution of it, there are provided perforated shelves 1), on which blocks of the ice may rest, while the perforations admit of the free passage downward, and thence out by the pipe I), of

any water from the ice.

I) is a door from the chamber a to the icechamber 1). a and (Z are chambers or jackets surrounding both the chambers to and b, for the purpose of receiving cold air to aid in keeping down the temperature of the compartments a and b.

Both the floor a and the ceiling a of the chamber a are perforated with numerous small holes. The obj ect of the perforations in the floor a is that the air from the chamber a may freely circulate in the chamber a below, to be thence withdrawn at intervals, when required, by any suitable pumping apparatus, 6.

This pumping apparatus may be worked by a steam-engine or other suitable power, or by a winch-handle applied to the wheel f, and the air withdrawn by the apparatus 6 through cation between the chamber a and the chambers c d, because the passage of air is outside the solid side wall which incloses the chambers a and a, and from the chamber d by an opening, g, into the pipe g, down which it will be conducted to the lower cross orinverted- T piece thereof, which is perforated with numerous small holes, through which the air is allowed to escape and to rise up in the chamber 12, and in doing so it becomes cooled by the action of the ice thereon as it rises up between the blocks or lumps of ice. The air thus cooled by the ice in the chamber 1) is thence conducted, by the longitudinal and transverse perforated pipes h and h and z and '5 into the chamber a formed over the perforated ceiling a of the chamber a, to replenish the chamber a.

The bell-shaped mouths If, F, and j of the pipes h, i, and j may be covered with felt or other filtering material. 1

' j is a passage with a bell-mouth opening, j, from the external air to the upper part of the pipe g, by which, when required, a fresh supply of external air may be drawn in to fill the respective chambers. This passage j is opened or closed by means of the tap or valve j and, when open, the passage into the pipe 9 from the jackets is closed by a tap or valve, g. By these means the air employed is caused to perform a double duty-that is to say, after havingbeen for a time utilized in the chamber a, it is caused to circulate through the surrounding chambers or jackets to exclude access of heat from without to the chamber a, and, when desired, fresh atmospheric air may be drawn in by the valve j to replace that which has been utilized.

k is an escape-valve for the escape of excess of air from the chambers 0 and (I.

By reducing the passage of air to intervals of time-say, to two hours out of every twentyfour-instead of having it continuous, economy of the ice will result.

Having now described my invention, I claim- The apparatus, constructed substantially as described, consisting of the chambers or jackto this specification in the preseneeof two subets 0d (11,1 the inaerimi chagllber a, avigg geli'aigscribing witnesses. r V 7 rate 001' an cei ing' 1 e ice-c am er e T fresh-air 'passage j, foill-air-exit valve icjandr GEORGE AOKLOM" pumping apparatus e, and for the purposes set Witnesses V forth. WILLIAM BROOKES,

In testimony whereof I have signed my name 1 ALFRED GEORGE BROOKEs. V 

